STS 3.7.1 - Error: Could not find or load main class 64bit.STS - spring-tool-suite

Yesterday I downloaded last STS 3.7.1 64bit and I have problem with Maven in it.
Run as > maven install > Error: Could not find or load main class 64bit.STS
OS: Win7 64bit
Hope it's clear enough, can you point me in the right direction?

You have to extract sts zip folder the same folder with eclipse.

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I have tried unsucessfully to install VMware Workbench IS 3.5.7 [3.5.7.4238219] from https://code.vmware.com/web/workbench/wbis/3.5 . I tried (Help => Install new software) with two different versions of eclipse, having two different errors:
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Cannot complete the install because one or more required items could not be found.
Software being installed: VMware Workbench CIM Tools 3.5.7.4236111 (com.vmware.vide.cimtools.feature.feature.group 3.5.7.4236111)
Missing requirement: Action Plug-in 3.5.7.4236111 (com.vmware.vide.p2action 3.5.7.4236111) requires 'package org.eclipse.equinox.p2.repository.artifact 2.3.0' but it could not be found
Missing requirement: Action Plug-in 3.5.7.4249275 (com.vmware.vide.p2action 3.5.7.4249275) requires 'package org.eclipse.equinox.p2.repository.artifact 2.3.0' but it could not be found
Cannot satisfy dependency:
From: VMware Workbench CIM Tools 3.5.7.4236111 (com.vmware.vide.cimtools.feature.feature.group 3.5.7.4236111)
To: com.vmware.vide.feature.feature.group [3.5.5,4.0.0)
Cannot satisfy dependency:
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To: com.vmware.vide.p2action [3.5.7.4236111]
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An error occurred while configuring the installed items
session context was:(profile=_home_test_eclipse_java-neon_eclipse, phase=org.eclipse.equinox.internal.p2.engine.phases.Configure, operand=null --> [R]com.vmware.vide.vlogbrowser.cli.feature.feature.group 3.5.7.4236111, action=org.eclipse.equinox.internal.p2.touchpoint.natives.actions.ChmodAction).
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I realized that ubuntu's eclipse already provides the plugin org.eclipse.equinox.p2.repository, but it's version 2.2 and VMware Workbench IS requires 2.3. I don't know if it can be installed.
Finally I could install the workbench on a fresh eclipse Neon.3 Release (4.6.3) but just after installing the components one by one, in a common sense order and reading carefully the errors: missing folders that the installer is not creating for you, like $INSTALL_PATH/eclipse/java-neon/eclipse/features/com.vmware.vide.vlogbrowser.cli.feature_3.5.7.4236111/app/vmwb-server
Thanks and best regards
/Angel

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cp libnet_sf_colorer.jnilib /Applications/eclipse/plugins/net.sf.colorer_0.9.8/os/macosx/x86_64/